Declension table of ?śumbhiṣyat

Masculine	Singular	Dual	Plural
Nominative	śumbhiṣyan	śumbhiṣyantau	śumbhiṣyantaḥ
Vocative	śumbhiṣyan	śumbhiṣyantau	śumbhiṣyantaḥ
Accusative	śumbhiṣyantam	śumbhiṣyantau	śumbhiṣyataḥ
Instrumental	śumbhiṣyatā	śumbhiṣyadbhyām	śumbhiṣyadbhiḥ
Dative	śumbhiṣyate	śumbhiṣyadbhyām	śumbhiṣyadbhyaḥ
Ablative	śumbhiṣyataḥ	śumbhiṣyadbhyām	śumbhiṣyadbhyaḥ
Genitive	śumbhiṣyataḥ	śumbhiṣyatoḥ	śumbhiṣyatām
Locative	śumbhiṣyati	śumbhiṣyatoḥ	śumbhiṣyatsu

Compound śumbhiṣyat -

Adverb -śumbhiṣyantam